Ch. 16 Thermal Energy and Heat

3. Thermal energy depends on the _______, temperature, and phase.
4. Sunlight that is converted into usable energy.
6. A transfer of energy is called ________.
8. A thermal ___________ conducts thermal energy poorly.
9. All object radiate __________.
10. Occurs when a fluid circulates in a loop as it alternately heats up and cools down.
14. Is related to the average kinetic energy of the particles in an object due to their random motions through space.
17. Any device that converts heat into work is a heat _______.
18. The third law of thermodynamics states that _________ zero cannot be reached.
19. Is the amount of heat needed to raise the temperature of 1 gram of a material by 1 degree C.
20. The study of conversions between thermal energy and other forms of energy is called ____________.
22. Thermal energy beneath the Earth's surface.

1. The second law of thermodynamics states that thermal energy can ______ from colder objects to hotter objects...
2. An instrument used to measure changes in thermal energy.
5. The transfer of energy by waves moving through space.
6. Thermal energy that is not converted into work is called ______ heat.
7. The first law of thermodynamics states that energy is ______________.
11. Type of resources that include oil, natural gas, coal, and uranium.
12. Is an increase in the volume of a material due to a temp. increase.
13. The transfer of thermal energy with no overall transfer of matter.
15. The transfer of thermal energy when particles of a fluid move from one place to another.
16. The transfer of thermal energy from one object to another because of a temperature difference.
21. A thermal ___________ is a material that conducts thermal energy well.
22. Conduction in _____ is slower than in liquids and solids.